课程信息
4,387

100% 在线

立即开始,按照自己的计划学习。

可灵活调整截止日期

根据您的日程表重置截止日期。

初级

完成时间大约为37 小时

建议:8 weeks of study; 4–5 hours/week...

英语(English)

字幕:英语(English)

100% 在线

立即开始,按照自己的计划学习。

可灵活调整截止日期

根据您的日程表重置截止日期。

初级

完成时间大约为37 小时

建议:8 weeks of study; 4–5 hours/week...

英语(English)

字幕:英语(English)

教学大纲 - 您将从这门课程中学到什么

1
完成时间为 1 小时

Course Orientation

The series of videos and readings provided here are aimed at introducing this course in Lactation Biology. Course organization is described. Requirements for participation in the course are summarized. And, opportunities for learners to engage in the course content, as well as with each other, are indicated. ...
2 个视频 (总计 10 分钟), 5 个阅读材料, 2 个测验
2 个视频
Lactation Word Cloud2分钟
5 个阅读材料
Course Syllabus10分钟
About the Discussion Forums1分钟
Social Media5分钟
Updating Your Profile5分钟
Study Aid Activities Overview5分钟
2 个练习
Orientation Quiz5分钟
Demographics Survey26分钟
完成时间为 1 小时

Module 1: Introduction to Lactation Biology

In this module, we will introduce some basic definitions of terms related to the biology of lactation, provide an overview of milk, and briefly introduce the phylogenetic organization and evolution of mammals. Learning the definitions will be important for establishing a baseline vocabulary that will help reduce confusion about topics presented in subsequent videos. Milk, a primary product of the lactation process, will be introduced in an effort to provide a foundation for later modules in which milk and milk composition are explored in greater depth. The series of videos about mammals collectively offer a brief overview of the wide spectrum of these animal species, as well as some thoughts on how lactation came to be an integral part of the reproductive strategy of those species....
8 个视频 (总计 58 分钟), 2 个阅读材料, 2 个测验
8 个视频
Definitions Part 27分钟
An Overview of Milk5分钟
How Much Milk?4分钟
Milk Products6分钟
Mammals10分钟
Mammalian Evolution5分钟
Why Lactate?9分钟
2 个阅读材料
Module 1 Overview5分钟
Optional: Study Aids5分钟
2 个练习
Lesson 1-1 Quiz10分钟
Lesson 1-3 Quiz10分钟
完成时间为 4 小时

Module 2: Mammary Gland Structure

One of the most fundamental requirements for understanding any aspect of biology is to appreciate the relationships that exist between form and function, or anatomy and physiology. In the case of lactation and the mammary gland, it is important to be able to visualize the various levels of mammary gland structure in order to understand how the mammary gland grows and functions. This module presents an overview of mammary gland anatomy and macrostructure using the dairy cow as our primary example. In addition, the tissue, cellular, and subcellular levels of mammary structure are presented. The module provides a conceptual foundation that will allow you to individually explore mammary gland anatomy and microstructure in other mammalian species. ...
19 个视频 (总计 130 分钟), 2 个阅读材料, 5 个测验
19 个视频
Mammary Lobes6分钟
Simple vs Complex Glands4分钟
Mammary Anatomy at the Cow Side10分钟
Mammary Suspensory System9分钟
Median Suspensory Ligament2分钟
Structure of Teats and Cisterns6分钟
Supernumerary Teats4分钟
Mammary Blood System10分钟
Mammary Lymph System6分钟
Mammary Nervous System3分钟
Introduction to Mammary Microstructure6分钟
Microstructure - 2D and 3D8分钟
Lobules5分钟
More on Lobules9分钟
Alveoli and Their Environment7分钟
Myoepithelial Cells5分钟
Mammary Cell Ultrastructure Part 18分钟
Mammary Cell Ultrastructure Part 25分钟
2 个阅读材料
Module 2 Overview5分钟
Optional: Study Aids5分钟
5 个练习
Lesson 2-1 Quiz10分钟
Lesson 2-2 Quiz12分钟
Lesson 2-3 Quiz10分钟
Lesson 2-4 Quiz10分钟
Week 1 Quiz30分钟
2
完成时间为 5 小时

Module 3: Milk Composition

Milk is the product of the lactation process. Such a simple statement does not come close to doing justice to the complex nature of this biological fluid. In this module, we explore the major components of milk, as well as provide a basis for understanding milk as a product that we purchase in a store. Mechanisms of synthesis of milk components are introduced. And, several videos include discussions of the nature of differences in milk composition among mammalian species, including comparisons of cow milk with human milk....
27 个视频 (总计 178 分钟), 2 个阅读材料, 7 个测验
27 个视频
Milk Components Demo2分钟
Perspectives on Milk Composition7分钟
Milk Under the Microscope5分钟
Major Milk Fractions5分钟
From Cow to Store10分钟
Total Solids4分钟
Lactose7分钟
Lactose Intolerance4分钟
Lactose Synthesis8分钟
Milk Protein4分钟
Casein8分钟
Casein Demo5分钟
Whey Proteins9分钟
Milk Protein Synthesis8分钟
Milk Fat4分钟
Fatty Acids6分钟
Milk Fat - Species Comparisons5分钟
Milk Fat Synthesis15分钟
Milk Minerals10分钟
Milk Vitamins2分钟
Cells in Milk6分钟
More on Milk Cells1分钟
Milk Bioactive Factors8分钟
Species Comparisons of Milk7分钟
Cow vs. Human Milk Composition5分钟
Wrapping Up Milk Composition4分钟
2 个阅读材料
Module 3 Overview5分钟
Optional: Study Aid5分钟
7 个练习
Lesson 3-1 Quiz10分钟
Lesson 3-2 Quiz10分钟
Lesson 3-3 Quiz10分钟
Lesson 3-4 Quiz10分钟
Lesson 3-5 Quiz10分钟
Lesson 3-6 Quiz10分钟
Week 2 Quiz30分钟
3
完成时间为 3 小时

Module 4: Mammary Gland Development

The tissue that we know of as the mammary gland (or udder or breast) may appear as relatively uncomplicated compared with some internal organs such as the heart or brain. The gland is outside the body wall, has a nipple or teat in most species, and has a series of ducts by which milk that is produced in microscopic blind tubes can be expressed from the gland. How can such a gland develop and what regulates that development? It turns out that the initial stage of development occurs extremely early in the fetal development of the animal. It then proceeds through a series of developmental phases, many of which are closely linked with the reproductive functioning of the animal, and eventually leading to the time when the gland is producing milk. Furthermore, the mammary gland is one of a few tissues that undergoes repeated cycles of development, functioning, regression, and redevelopment, again associated with the reproductive cycles of the animal. This module describes the various stages of mammary development and provides the framework for understanding how these stages relate to each other, as well as to the functionality of the gland....
11 个视频 (总计 79 分钟), 2 个阅读材料, 4 个测验
11 个视频
Fetal Stage - 26分钟
Fetal Stage - 36分钟
Prepubertal Stage - 17分钟
Prepubertal Stage - 23分钟
Postpubertal Stage7分钟
Development During Pregnancy - 12分钟
Development During Pregnancy - 26分钟
Development During Pregnancy - 35分钟
Lactation7分钟
Bovine Mammary Development13分钟
2 个阅读材料
Module 4 Overview5分钟
Optional: Study Aid5分钟
4 个练习
Lesson 4-1 Quiz10分钟
Lesson 4-2 Quiz10分钟
Lesson 4-3 Quiz10分钟
Week 3 Quiz30分钟
4
完成时间为 5 小时

Module 5: Mother & Neonate

The peripartum period, the time shortly before, during, and after giving birth, is a time of rapid changes in the mammary gland, the mother, and the neonate. Extensive physiological coordination occurs between the processes leading up to and giving birth, the formation of colostrum, the initiation of lactation in the mammary gland, and the subsequent removal of milk by the neonate. In this module, we explore how the mammary gland changes around the time of giving birth when the gland transitions from a non-lactating to a lactating state. Part of this transition is the production of colostrum, the first mammary secretion produced by the gland after giving birth. Another part of the transition is the changing regulation of mammary gland function from one being driven primarily by hormones associated with pregnancy and parturition to one where milk removal, by the neonate or milking machine, is the driving force in gland function after birth. In this module, we examine some basic characteristics of the neonate, how lactation is initiated (lactogenesis), and the formation and special components of colostrum (immunoglobulins) and their impact on the neonate....
17 个视频 (总计 124 分钟), 2 个阅读材料, 7 个测验
17 个视频
A Cow Calving3分钟
The Neonate8分钟
Lactogenesis & Its Stages7分钟
Secretory Differentiation8分钟
Secretory Activation & Lactose Synthesis7分钟
Hormonal Regulation5分钟
Comparative Hormonal Regulation7分钟
Prolactin - Sources4分钟
Prolactin - Control of Secretion5分钟
Prolactin - Other Regulation5分钟
Colostrum Composition12分钟
Immunoglobulins in Colostrum6分钟
Colostrum & the Neonate10分钟
Immunoglobulin Receptor6分钟
Mammary Transport of Immunoglobulin7分钟
Immunoglobulin Transport to the Neonate6分钟
2 个阅读材料
Module 5 Overview5分钟
Optional: Study Aid5分钟
6 个练习
Lesson 5-1 Quiz10分钟
Lesson 5-2 Quiz10分钟
Lesson 5-3 Quiz10分钟
Lesson 5-4 Quiz10分钟
Lesson 5-5 Quiz10分钟
Week 4 Quiz30分钟
5
完成时间为 5 小时

Module 6: Lactation

In this module, we explore the many facets of lactation as a complex physiological process. We will find that removal of the milk in the gland is critical to continued production of that fluid. The interactions between milk removal, the systemic factors stimulating the gland to produce milk, such as several hormones, and the local factors that inhibit further milk secretion are examined. Some of the effects of milk removal, as well as the absence of milk removal, are discussed in this series of videos. The responses of the mammary gland to milk removal provide a means of understanding the impact of management practices on lactation. ...
27 个视频 (总计 214 分钟), 2 个阅读材料, 5 个测验
27 个视频
Systemic vs Local Regulation10分钟
Galactogogues8分钟
Prolactin5分钟
Measurement of Milk Production7分钟
Prolactin - Nonruminants9分钟
Prolactin - Ruminants 16分钟
Prolactin - Ruminants 29分钟
Growth Hormone - Cows8分钟
Growth Hormone - Rats10分钟
Other Hormones9分钟
Feedback Inhibition of Milk Secretion10分钟
Frequency of Milk Removal5分钟
Cisternal vs Alveolar Milk Pools7分钟
Frequency of Milk Removal - Cows6分钟
Determinants of Milk Yield6分钟
Intensity of Milk Removal9分钟
Milk Stasis4分钟
Mammary Secretions During Involution10分钟
Mammary Tissue During Involution8分钟
Dry Period9分钟
Persistency & Relactation10分钟
Mammary Involution - Sows9分钟
Compensatory Milk Production9分钟
Lactational History - Cows3分钟
Lactational History - Sows5分钟
Lactational History - Rats6分钟
2 个阅读材料
Module 6 Overview5分钟
Optional: Study Aid5分钟
5 个练习
Lesson 6-1 Quiz10分钟
Lesson 6-2 Quiz10分钟
Lesson 6-3 Quiz10分钟
Lesson 6-4 Quiz10分钟
Week 5 Quiz30分钟
6
完成时间为 2 小时

Module 7: Milk Ejection

This module introduces the physiological process known as the milk ejection reflex. The neural and endocrine pathways of this process are discussed, as is a broad overview of the hormone responsible for milk ejection, oxytocin. In addition, the consequences of ineffective milk ejection and ways that have been tried to manipulate the milk ejection process are presented. ...
15 个视频 (总计 95 分钟), 2 个阅读材料, 3 个测验
15 个视频
Neuroendocrine Reflex5分钟
Timing of Milk Ejection4分钟
Rise in Intramammary Pressure3分钟
Mammary Structure Changes During Ejection4分钟
Microstucture of Milk Ejection2分钟
Oxytocin5分钟
Sources of Oxytocin10分钟
Other Functions of Oxytocin4分钟
Residual Milk8分钟
Disturbed Milk Flow9分钟
Manipulation of Milk Ejection6分钟
Inhibition of Milk Ejection6分钟
Species Comparisons9分钟
Milk Ejection Demo - Optional7分钟
2 个阅读材料
Module 7 Overview5分钟
Optional: Study Aid5分钟
3 个练习
Lesson 7-1 Quiz10分钟
Lesson 7-2 Quiz10分钟
Lesson 7-3 Quiz10分钟
完成时间为 3 小时

Module 8: Atypical Lactation

We typically assume that development of the mammary gland and production of milk are closely regulated by and are coordinated with the reproductive functioning of the animal. Most often that is true. From the knowledge gained from other modules in this course, it is clear that mammary gland development and lactogenesis are heavily regulated by hormones. As it turns out, the presence of mammary gland-regulating hormones is not always directly associated with the reproductive status of the animal. If the hormone activity is present, regardless of its source, it may impact mammary gland development and function. The series of videos in this module presents an overview of what we are calling atypical lactation. That is when the mammary gland undergoes development and lactation in the absence of the usual physiological cues that we associate with the process, such as an animal giving birth....
7 个视频 (总计 74 分钟), 2 个阅读材料, 3 个测验
7 个视频
Estrogen5分钟
Phytoestrogen7分钟
Zearalenone7分钟
Elevated Prolactin14分钟
Relactation, Allosucking, Communal Nursing12分钟
Lactation in Males15分钟
2 个阅读材料
Module 8 Overview5分钟
Optional: Study Aid5分钟
2 个练习
Lesson 8-1 Quiz10分钟
Week 6 Quiz30分钟
7
完成时间为 6 小时

Module 9: Mastitis

The mammary gland is an excretory gland, meaning that it produces a fluid that is secreted to the outside of the body. These secretions leave the gland through a series of ducts that eventually open to the outside of the skin. The presence of these openings not only means that the mammary secretion can leave the gland, it also means that microorganisms can enter the gland. When that happens, the gland may become infected and present as a disease known as mastitis. Mastitis is an inflammation of the mammary gland, the inflammation most commonly being caused by an infection by a pathogen. Mastitis is the most costly disease in dairy cattle, but is also prevalent in other species, including our own. We will examine many of the aspects of how this disease is manifested using the dairy cow as our primary example in this module. We will examine mastitis at the level of an individual cow, as well as at the whole herd level. And then to fully integrate and apply the knowledge gained about this disease, we will examine several real-life cases of herd-level mastitis problems faced by dairy producers....
19 个视频 (总计 189 分钟), 3 个阅读材料, 6 个测验
19 个视频
Milk Components5分钟
Host-Agent-Environment3分钟
First Line of Defense6分钟
Inflammatory Response11分钟
Detection8分钟
Treatment & Control8分钟
Prevention10分钟
Mastitis Syndromes11分钟
Mastitis Types7分钟
Contagious Pathogens7分钟
Environmental Pathogens6分钟
Other Pathogens5分钟
Mastitis at a Herd-Level8分钟
Contagious vs Environmental5分钟
Milking Procedure9分钟
Mastitis Example Case 120分钟
Mastitis Example Case 224分钟
Mastitis Example Case 319分钟
3 个阅读材料
Module 9 Overview5分钟
Optional: Study Aid5分钟
Mastitis Cases Answers5分钟
5 个练习
Lesson 9-1 Quiz10分钟
Lesson 9-2 Quiz10分钟
Lesson 9-3 Quiz10分钟
Lesson 9-4 Quiz10分钟
Week 7 Quiz30分钟
8
完成时间为 4 小时

Module 10: Comparative Lactation

In this module, we provide a series of videos that expands what has already been learned in other modules about the basic principles of lactation biology to a range of mammalian species. These videos focus on these animals in their native state, as well as some that have been domesticated for use as dairy animals and domestic livestock. This module is optional....
21 个视频 (总计 188 分钟), 2 个阅读材料, 1 个测验
21 个视频
Swine Lactation: Mammary Anatomy & Development10分钟
Swine Lactation: Milk Composition7分钟
Swine Lactation: Lactogenesis & Early Lactation11分钟
Swine Lactation: Milk Production7分钟
Swine Lactation: Milk Removal & Sucking Intensity8分钟
Swine Lactation: Milk Ejection9分钟
Swine Lactation: Mammary Involution8分钟
Swine Lactation: Prolactin & Lactation14分钟
Swine Lactation: Lactational History11分钟
Swine Lactation: Mastitis 19分钟
Swine Lactation: Mastitis 210分钟
Swine Lactation: Mastitis 36分钟
Elephant Lactation 111分钟
Elephant Lactation 210分钟
Dairy Goats: Farm Introduction7分钟
Dairy Goats: The Kids5分钟
Dairy Goats: The Does2分钟
Dairy Goats: Milking Parlor and Procedures5分钟
Dairy Goats: Cheese Introduction7分钟
Dairy Goats: Making Cheese11分钟
2 个阅读材料
Module 10 Overview5分钟
Solutions to Crossword Puzzles10分钟
1 个练习
End of Course Survey52分钟
4.8
4 个审阅Chevron Right

67%

通过此课程获得实实在在的工作福利

50%

加薪或升职

热门审阅

创建者 MTMar 1st 2019

was great course would love to see a little more of human lactation in here to compare with. i enjoyed the corse just getting grading was slow.

讲师

Avatar

Dr. Walter Hurley, PhD

Professor Emeritus
Department of Animal Sciences

关于 伊利诺伊大学香槟分校

The University of Illinois at Urbana-Champaign is a world leader in research, teaching and public engagement, distinguished by the breadth of its programs, broad academic excellence, and internationally renowned faculty and alumni. Illinois serves the world by creating knowledge, preparing students for lives of impact, and finding solutions to critical societal needs. ...

常见问题

  • 注册以便获得证书后,您将有权访问所有视频、测验和编程作业(如果适用)。只有在您的班次开课之后,才可以提交和审阅同学互评作业。如果您选择在不购买的情况下浏览课程,可能无法访问某些作业。

  • 您购买证书后,将有权访问所有课程材料,包括评分作业。完成课程后,您的电子课程证书将添加到您的成就页中,您可以通过该页打印您的课程证书或将其添加到您的领英档案中。如果您只想阅读和查看课程内容,可以免费旁听课程。

还有其他问题吗?请访问 学生帮助中心